Improvement in wood-pavement



H-nitni States sind @Wim HENRY J. ALVORD, OF WASHINGTON, HISTRIOT OF COLUMBIA, ASSIGNOR VTO HIMSELF AND CHARLES E. BISHOP, OF SAME PLAGE.

Leners Parent No. 106,910, dell August 30,1870.

i 5 IMPROVEMENT IN WQQD-PAVEMENT.

-w'bl- The Schedule referred to in these Letters Patent vand makingl part of the same,

t, HENRY J. Awww, 0f nl@ city of Washington, nrthe District of' Columbia, have invented certain Improvements in Wooden Pavement-s, of which the following is a specification.

Nata/re and Objects of the Invention.

My invention relates to an improvement in the Nicolson parement, and consists of a foundation for such pavement, formed ot sections of plank cut in width slightly exceeding the width of the block, with the parting strip nailed thereto, the said foundation boards being grooved and beveled on their sides to form' connections amtmaterial support with each, -as here inat'ter fully set forth.

Description of the Accompanying Drawing. .Figure 1 represents an oblique view of the pavement embodying my invention.

Figure 2 represents a single block of the same with the foot and side pieces nailed on.

General Description'.

A is a block of hard' pine wood, about teu inches long, six high, and' three and a half inches thick.

To the bottom ot' this block is nailed afoot-board, a, of the saine. material and length, tive inches wide, and one inch thick, projecting an inch on ione side of the block,` and half an inch on the other side,

In the edge projecting an inch is a V-shaped groove, c, and the opposite edge e is'beveled, so as to tit this groove precisely. f

0n the grooved side of the block is nailed another board, f, ofthe same material and length, three inches wide, and two thick.

When the blocks are titted together, this 'causes .a

vacant spacc,c', to remain between them on top of one inch and. thrce'inches deep, which is filled in with asphalt-um and gravel or concrete, driven in with a wedge and hammer until perfect-ly solid and hard, by which means theblocks are made steady, and prevented from lowering or sinking. l

To gire the pavement greater durability, thel blocks are fitted together so as to break joints.

I do not `claim the blocks and parting strips, or broadly a board foundation, as these are old and Wellknown but -\Vhat I do claim, and desire to secure by Letters Patent, isy A pavement, composed of the wooden blocks A set on end, having strips of suitable thickness nailed thereto, the whole resting on .boards of the length and width of the blocks and strips combined, the foundation-boards being beveled and grooved, as sho\vn,and the spaces between'the blocks and above the strips heilig filled with concrete or any suitable filling, all as shown and described.

' HENRY J. ALVORD.

Witnesses;

CHAs. C. TUoKER, Gnd-A. LowNDs. 

